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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">com.google.android.exoplayer2.source</a></div>
<h2 title="Interface MediaSourceEventListener" class="title">Interface MediaSourceEventListener</h2>
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<dd><code><a href="../analytics/AnalyticsCollector.html" title="class in com.google.android.exoplayer2.analytics">AnalyticsCollector</a></code></dd>
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<pre>public interface <span class="typeNameLabel">MediaSourceEventListener</span></pre>
<div class="block">Interface for callbacks to be notified of <a href="MediaSource.html" title="interface in com.google.android.exoplayer2.source"><code>MediaSource</code></a> events.</div>
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<table class="memberSummary">
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Interface</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="MediaSourceEventListener.EventDispatcher.html" title="class in com.google.android.exoplayer2.source">MediaSourceEventListener.EventDispatcher</a></span></code></th>
<td class="colLast">
<div class="block">Dispatches events to <a href="MediaSourceEventListener.html" title="interface in com.google.android.exoplayer2.source"><code>MediaSourceEventListeners</code></a>.</div>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t5" class="tableTab"><span><a href="javascript:show(16);">Default Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>default void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onDownstreamFormatChanged(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.MediaLoadData)">onDownstreamFormatChanged</a></span>&#8203;(int&nbsp;windowIndex,
                         <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId,
                         <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source">MediaLoadData</a>&nbsp;mediaLoadData)</code></th>
<td class="colLast">
<div class="block">Called when a downstream format change occurs (i.e.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>default void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onLoadCanceled(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.LoadEventInfo,com.google.android.exoplayer2.source.MediaLoadData)">onLoadCanceled</a></span>&#8203;(int&nbsp;windowIndex,
              <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId,
              <a href="LoadEventInfo.html" title="class in com.google.android.exoplayer2.source">LoadEventInfo</a>&nbsp;loadEventInfo,
              <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source">MediaLoadData</a>&nbsp;mediaLoadData)</code></th>
<td class="colLast">
<div class="block">Called when a load is canceled.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>default void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onLoadCompleted(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.LoadEventInfo,com.google.android.exoplayer2.source.MediaLoadData)">onLoadCompleted</a></span>&#8203;(int&nbsp;windowIndex,
               <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId,
               <a href="LoadEventInfo.html" title="class in com.google.android.exoplayer2.source">LoadEventInfo</a>&nbsp;loadEventInfo,
               <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source">MediaLoadData</a>&nbsp;mediaLoadData)</code></th>
<td class="colLast">
<div class="block">Called when a load ends.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>default void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onLoadError(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.LoadEventInfo,com.google.android.exoplayer2.source.MediaLoadData,java.io.IOException,boolean)">onLoadError</a></span>&#8203;(int&nbsp;windowIndex,
           <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId,
           <a href="LoadEventInfo.html" title="class in com.google.android.exoplayer2.source">LoadEventInfo</a>&nbsp;loadEventInfo,
           <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source">MediaLoadData</a>&nbsp;mediaLoadData,
           <a href="https://developer.android.com/reference/java/io/IOException.html" title="class or interface in java.io" class="externalLink" target="_top">IOException</a>&nbsp;error,
           boolean&nbsp;wasCanceled)</code></th>
<td class="colLast">
<div class="block">Called when a load error occurs.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>default void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onLoadStarted(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.LoadEventInfo,com.google.android.exoplayer2.source.MediaLoadData)">onLoadStarted</a></span>&#8203;(int&nbsp;windowIndex,
             <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId,
             <a href="LoadEventInfo.html" title="class in com.google.android.exoplayer2.source">LoadEventInfo</a>&nbsp;loadEventInfo,
             <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source">MediaLoadData</a>&nbsp;mediaLoadData)</code></th>
<td class="colLast">
<div class="block">Called when a load begins.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>default void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onUpstreamDiscarded(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.MediaLoadData)">onUpstreamDiscarded</a></span>&#8203;(int&nbsp;windowIndex,
                   <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId,
                   <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source">MediaLoadData</a>&nbsp;mediaLoadData)</code></th>
<td class="colLast">
<div class="block">Called when data is removed from the back of a media buffer, typically so that it can be
 re-buffered in a different format.</div>
</td>
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<h3>Method Detail</h3>
<a id="onLoadStarted(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.LoadEventInfo,com.google.android.exoplayer2.source.MediaLoadData)">
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<h4>onLoadStarted</h4>
<pre class="methodSignature">default&nbsp;void&nbsp;onLoadStarted&#8203;(int&nbsp;windowIndex,
                           @Nullable
                           <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId,
                           <a href="LoadEventInfo.html" title="class in com.google.android.exoplayer2.source">LoadEventInfo</a>&nbsp;loadEventInfo,
                           <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source">MediaLoadData</a>&nbsp;mediaLoadData)</pre>
<div class="block">Called when a load begins.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>windowIndex</code> - The window index in the timeline of the media source this load belongs to.</dd>
<dd><code>mediaPeriodId</code> - The <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source"><code>MediaSource.MediaPeriodId</code></a> this load belongs to. Null if the load does not
     belong to a specific media period.</dd>
<dd><code>loadEventInfo</code> - The <a href="LoadEventInfo.html" title="class in com.google.android.exoplayer2.source"><code>LoadEventInfo</code></a> corresponding to the event. The value of <a href="LoadEventInfo.html#uri"><code>LoadEventInfo.uri</code></a> won't reflect potential redirection yet and <a href="LoadEventInfo.html#responseHeaders"><code>LoadEventInfo.responseHeaders</code></a> will be empty.</dd>
<dd><code>mediaLoadData</code> - The <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source"><code>MediaLoadData</code></a> defining the data being loaded.</dd>
</dl>
</li>
</ul>
<a id="onLoadCompleted(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.LoadEventInfo,com.google.android.exoplayer2.source.MediaLoadData)">
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<h4>onLoadCompleted</h4>
<pre class="methodSignature">default&nbsp;void&nbsp;onLoadCompleted&#8203;(int&nbsp;windowIndex,
                             @Nullable
                             <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId,
                             <a href="LoadEventInfo.html" title="class in com.google.android.exoplayer2.source">LoadEventInfo</a>&nbsp;loadEventInfo,
                             <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source">MediaLoadData</a>&nbsp;mediaLoadData)</pre>
<div class="block">Called when a load ends.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>windowIndex</code> - The window index in the timeline of the media source this load belongs to.</dd>
<dd><code>mediaPeriodId</code> - The <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source"><code>MediaSource.MediaPeriodId</code></a> this load belongs to. Null if the load does not
     belong to a specific media period.</dd>
<dd><code>loadEventInfo</code> - The <a href="LoadEventInfo.html" title="class in com.google.android.exoplayer2.source"><code>LoadEventInfo</code></a> corresponding to the event. The values of <a href="LoadEventInfo.html#elapsedRealtimeMs"><code>LoadEventInfo.elapsedRealtimeMs</code></a> and <a href="LoadEventInfo.html#bytesLoaded"><code>LoadEventInfo.bytesLoaded</code></a> are relative to the
     corresponding <a href="#onLoadStarted(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.LoadEventInfo,com.google.android.exoplayer2.source.MediaLoadData)"><code>onLoadStarted(int, MediaPeriodId, LoadEventInfo, MediaLoadData)</code></a>
     event.</dd>
<dd><code>mediaLoadData</code> - The <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source"><code>MediaLoadData</code></a> defining the data being loaded.</dd>
</dl>
</li>
</ul>
<a id="onLoadCanceled(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.LoadEventInfo,com.google.android.exoplayer2.source.MediaLoadData)">
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<h4>onLoadCanceled</h4>
<pre class="methodSignature">default&nbsp;void&nbsp;onLoadCanceled&#8203;(int&nbsp;windowIndex,
                            @Nullable
                            <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId,
                            <a href="LoadEventInfo.html" title="class in com.google.android.exoplayer2.source">LoadEventInfo</a>&nbsp;loadEventInfo,
                            <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source">MediaLoadData</a>&nbsp;mediaLoadData)</pre>
<div class="block">Called when a load is canceled.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>windowIndex</code> - The window index in the timeline of the media source this load belongs to.</dd>
<dd><code>mediaPeriodId</code> - The <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source"><code>MediaSource.MediaPeriodId</code></a> this load belongs to. Null if the load does not
     belong to a specific media period.</dd>
<dd><code>loadEventInfo</code> - The <a href="LoadEventInfo.html" title="class in com.google.android.exoplayer2.source"><code>LoadEventInfo</code></a> corresponding to the event. The values of <a href="LoadEventInfo.html#elapsedRealtimeMs"><code>LoadEventInfo.elapsedRealtimeMs</code></a> and <a href="LoadEventInfo.html#bytesLoaded"><code>LoadEventInfo.bytesLoaded</code></a> are relative to the
     corresponding <a href="#onLoadStarted(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.LoadEventInfo,com.google.android.exoplayer2.source.MediaLoadData)"><code>onLoadStarted(int, MediaPeriodId, LoadEventInfo, MediaLoadData)</code></a>
     event.</dd>
<dd><code>mediaLoadData</code> - The <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source"><code>MediaLoadData</code></a> defining the data being loaded.</dd>
</dl>
</li>
</ul>
<a id="onLoadError(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.LoadEventInfo,com.google.android.exoplayer2.source.MediaLoadData,java.io.IOException,boolean)">
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<h4>onLoadError</h4>
<pre class="methodSignature">default&nbsp;void&nbsp;onLoadError&#8203;(int&nbsp;windowIndex,
                         @Nullable
                         <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId,
                         <a href="LoadEventInfo.html" title="class in com.google.android.exoplayer2.source">LoadEventInfo</a>&nbsp;loadEventInfo,
                         <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source">MediaLoadData</a>&nbsp;mediaLoadData,
                         <a href="https://developer.android.com/reference/java/io/IOException.html" title="class or interface in java.io" class="externalLink" target="_top">IOException</a>&nbsp;error,
                         boolean&nbsp;wasCanceled)</pre>
<div class="block">Called when a load error occurs.

 <p>The error may or may not have resulted in the load being canceled, as indicated by the
 <code>wasCanceled</code> parameter. If the load was canceled, <a href="#onLoadCanceled(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.LoadEventInfo,com.google.android.exoplayer2.source.MediaLoadData)"><code>onLoadCanceled(int, com.google.android.exoplayer2.source.MediaSource.MediaPeriodId, com.google.android.exoplayer2.source.LoadEventInfo, com.google.android.exoplayer2.source.MediaLoadData)</code></a> will
 <em>not</em> be called in addition to this method.

 <p>This method being called does not indicate that playback has failed, or that it will fail.
 The player may be able to recover from the error. Hence applications should <em>not</em>
 implement this method to display a user visible error or initiate an application level retry.
 <a href="../Player.Listener.html#onPlayerError(com.google.android.exoplayer2.ExoPlaybackException)"><code>Player.Listener.onPlayerError(com.google.android.exoplayer2.ExoPlaybackException)</code></a> is the appropriate place to implement such behavior. This
 method is called to provide the application with an opportunity to log the error if it wishes
 to do so.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>windowIndex</code> - The window index in the timeline of the media source this load belongs to.</dd>
<dd><code>mediaPeriodId</code> - The <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source"><code>MediaSource.MediaPeriodId</code></a> this load belongs to. Null if the load does not
     belong to a specific media period.</dd>
<dd><code>loadEventInfo</code> - The <a href="LoadEventInfo.html" title="class in com.google.android.exoplayer2.source"><code>LoadEventInfo</code></a> corresponding to the event. The values of <a href="LoadEventInfo.html#elapsedRealtimeMs"><code>LoadEventInfo.elapsedRealtimeMs</code></a> and <a href="LoadEventInfo.html#bytesLoaded"><code>LoadEventInfo.bytesLoaded</code></a> are relative to the
     corresponding <a href="#onLoadStarted(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.LoadEventInfo,com.google.android.exoplayer2.source.MediaLoadData)"><code>onLoadStarted(int, MediaPeriodId, LoadEventInfo, MediaLoadData)</code></a>
     event.</dd>
<dd><code>mediaLoadData</code> - The <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source"><code>MediaLoadData</code></a> defining the data being loaded.</dd>
<dd><code>error</code> - The load error.</dd>
<dd><code>wasCanceled</code> - Whether the load was canceled as a result of the error.</dd>
</dl>
</li>
</ul>
<a id="onUpstreamDiscarded(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.MediaLoadData)">
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<li class="blockList">
<h4>onUpstreamDiscarded</h4>
<pre class="methodSignature">default&nbsp;void&nbsp;onUpstreamDiscarded&#8203;(int&nbsp;windowIndex,
                                 <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId,
                                 <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source">MediaLoadData</a>&nbsp;mediaLoadData)</pre>
<div class="block">Called when data is removed from the back of a media buffer, typically so that it can be
 re-buffered in a different format.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>windowIndex</code> - The window index in the timeline of the media source this load belongs to.</dd>
<dd><code>mediaPeriodId</code> - The <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source"><code>MediaSource.MediaPeriodId</code></a> the media belongs to.</dd>
<dd><code>mediaLoadData</code> - The <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source"><code>MediaLoadData</code></a> defining the media being discarded.</dd>
</dl>
</li>
</ul>
<a id="onDownstreamFormatChanged(int,com.google.android.exoplayer2.source.MediaSource.MediaPeriodId,com.google.android.exoplayer2.source.MediaLoadData)">
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<h4>onDownstreamFormatChanged</h4>
<pre class="methodSignature">default&nbsp;void&nbsp;onDownstreamFormatChanged&#8203;(int&nbsp;windowIndex,
                                       @Nullable
                                       <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source">MediaSource.MediaPeriodId</a>&nbsp;mediaPeriodId,
                                       <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source">MediaLoadData</a>&nbsp;mediaLoadData)</pre>
<div class="block">Called when a downstream format change occurs (i.e. when the format of the media being read
 from one or more <a href="SampleStream.html" title="interface in com.google.android.exoplayer2.source"><code>SampleStream</code></a>s provided by the source changes).</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>windowIndex</code> - The window index in the timeline of the media source this load belongs to.</dd>
<dd><code>mediaPeriodId</code> - The <a href="MediaSource.MediaPeriodId.html" title="class in com.google.android.exoplayer2.source"><code>MediaSource.MediaPeriodId</code></a> the media belongs to.</dd>
<dd><code>mediaLoadData</code> - The <a href="MediaLoadData.html" title="class in com.google.android.exoplayer2.source"><code>MediaLoadData</code></a> defining the newly selected downstream data.</dd>
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